I would think Cleveland would want to build a better team around him, to keep him there. The Yao Ming to Cleveland rumors are interesting.
Too slow. They need an athletic center to keep up with the likes of Howard. The question isn't Cleveland "keeping" Lebron, its Lebron staying in town. I would think that he's a "hometown" type guy who would stick around, especially with Cleveland being able to provide a bit more money than others, but the NBA works in strange ways. From folded envelopes to odd bounces in the ping-pong ball dispenser, the NBA seems to have a knack for "making things happen" in the best interest of the NBA. If the NBA wants Lebron in a bigger market, they will figure out a way to make it happen behind closed doors. Give a businessman like Dan Gilbert (Cavs owner) a deal he can't refuse, and they might "let" Lebron take a walk. Gilbert has roots in Detroit, not Cleveland - so could just sell to the Chinese investors (currently on the hook for buying a sizeable minority share of the team)and take his money back to Detroit. Then.... The Yao rumours have something behind them.
Mo Williams was supposed to be the Pippen to his Jordan, but that never materialized, at least not when it counted.
He actually was until meeting up with teams having bigger guards = the ones the Cavs couldn't beat consistently = Orlando and the Lakers. The Cavs are provided a blueprint for offseason moves by watching the finals. The Lakers eliminated Howard *AND* the shooters with using their size on the perimeter. Once both of those were gone, the Magic were toast. 66 (should have been 67 with the starters on the bench the last game) wins showed that this undersized team was good enough to compete with nearly everyone. They had three matchup problems, with Garnet's departure making it down to two. Unfortunately, those were the two standing in the way of the championship.